Question 1

The nuclear symbol of helium,   is also the symbol for a(n)

Accepted Answer

A) alpha particle. 
B) proton. 
C) neutron. 
D) beta particle. 
E) gamma ray. 
A) alpha particle. 
B) proton. 
C) neutron. 
D) beta particle. 
E) gamma ray.

Question 2

The half-life of a radioisotope is

Accepted Answer

A) the time it takes for the radioisotope to become an isotope with one-half the atomic number of the original radioisotope. 
B) the time it takes for one-half of the sample to decay. 
C) the time it takes for the radioisotope to become an isotope with one-half of the atomic weight of the original radioisotope. 
D) the time it takes for the radioisotope to lose one-half of its neutrons. 
E) one-half of the time it takes for the radioisotope to completely decay to a nonradioactive isotope. 
A) the time it takes for the radioisotope to become an isotope with one-half the atomic number of the original radioisotope. 
B) the time it takes for one-half of the sample to decay. 
C) the time it takes for the radioisotope to become an isotope with one-half of the atomic weight of the original radioisotope. 
D) the time it takes for the radioisotope to lose one-half of its neutrons. 
E) one-half of the time it takes for the radioisotope to completely decay to a nonradioactive isotope.

Question 3

For   there are

Accepted Answer

A)  38 protons and 47 neutrons. 
B)  85 protons and 47 neutrons. 
C)  47 protons and 38 neutrons. 
D)  85 protons and 38 neutrons. 
E)  38 protons and 85 neutrons. 
A)  38 protons and 47 neutrons. 
B)  85 protons and 47 neutrons. 
C)  47 protons and 38 neutrons. 
D)  85 protons and 38 neutrons. 
E)  38 protons and 85 neutrons.

Question 4

When a gamma ray is emitted from the nucleus of an atom, the nuclear mass

Accepted Answer

A) decreases by two units. 
B) decreases by one unit. 
C) increases by two units. 
D) increases by one unit. 
E) remains the same. 
A) decreases by two units. 
B) decreases by one unit. 
C) increases by two units. 
D) increases by one unit. 
E) remains the same.

The nuclear symbol of helium, is also the symbol for a(n)

The half-life of a radioisotope is

For there are

When a gamma ray is emitted from the nucleus of an atom, the nuclear mass

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Exam 5: Nuclear Chemistry

The nuclear symbol of helium, is also the symbol for a(n)

The half-life of a radioisotope is

For there are

When a gamma ray is emitted from the nucleus of an atom, the nuclear mass

Chemistry in Our Lives

Chemistry and Measurements

Matter and Energy

Atoms and Elements

Ionic and Molecular Compounds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

Filters